US9003632B2 - Thimble mechanism for retention of a shackle in a wire loop termination - Google Patents
Thimble mechanism for retention of a shackle in a wire loop termination Download PDFInfo
- Publication number
- US9003632B2 US9003632B2 US13/758,661 US201313758661A US9003632B2 US 9003632 B2 US9003632 B2 US 9003632B2 US 201313758661 A US201313758661 A US 201313758661A US 9003632 B2 US9003632 B2 US 9003632B2
- Authority
- US
- United States
- Prior art keywords
- thimble
- shackle
- wire rope
- central opening
- thimble body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related, expires
Links
- 230000014759 maintenance of location Effects 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G11/00—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes
- F16G11/14—Devices or coupling-pieces designed for easy formation of adjustable loops, e.g. choker hooks; Hooks or eyes with integral parts designed to facilitate quick attachment to cables or ropes at any point, e.g. by forming loops
- F16G11/146—Eyes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/49947—Assembling or joining by applying separate fastener
-
- Y10T403/4336—
Definitions
- the present invention relates to a thimble mechanism for retention of a shackle in a wire rope loop termination.
- terminations for metal wire rope which serve to discourage fraying of the end of the wire rope and serve to permit connection to a load.
- wire rope loop termination is accomplished in a number of manners.
- a clamp or clip is used to fix the loose end of the wire rope back to itself to form an oval or a loop.
- An example of a wire rope clip may be seen in Assignee's U.S. Pat. No. 5,802,680 titled “Two-Piece Bolt and Saddle for Wire Rope Clips”.
- a swage termination is formed by mechanically compressing and deforming a fitting.
- An example of a swage termination may be seen in Assignee's U.S. Pat. No. 6,035,692 titled “Two Pass Method and Apparatus of Forming a Hexagonal Swage for Wire Rope Terminations.”
- an eye splice may be utilized as an alternate termination.
- a thimble may be utilized inside of the wire rope loop to preserve the shape of the loop, and to protect the wire rope from pinching and abrading on the inside of the loop.
- the thimble also prevents the load from coming into direct contact with the individual wires of the wire rope in order to spread the force of the load.
- Standard shackles include a body or bow and a pair of extending legs. Each leg terminates in an ear or end to form a pair of opposed, aligned openings for receipt of a shackle bolt. When in use, the body or bow of the shackle are engaged with the wire rope loop termination.
- the present invention is directed to a thimble mechanism for retention of a shackle in a wire rope loop termination.
- a thimble body in one preferred embodiment, includes an external arcuate edge with a thimble rope groove recessed therein.
- the thimble body includes a central opening larger than the width but smaller than the depth of shackle ends.
- a key way or slot is provided in the thimble body with the key way extending from the central opening to the thimble rope groove partially circumventing the thimble body.
- the bow of the shackle is inserted or reeved through the key way and into the central opening so that the bow resides in the central opening of the thimble body.
- the wire rope termination is thereafter completed with the wire rope reeved into place in and around the thimble rope groove.
- the wire rope closes the key way or slot and prevents the shackle from being removed.
- the angle and the width of the central opening and the key way prevent the end of the shackle from being removed from the thimble body after the wire rope is installed.
- a second preferred embodiment employs a thimble body with an oval central opening and a retaining pin across the central opening.
- a third preferred embodiment employs a thimble body having a thimble rope groove dimensioned so that the shackle cannot be removed from the thimble mechanism after the wire rope is reeved into place in and around the thimble rope groove.
- FIGS. 1 through 5 illustrate a first, preferred embodiment of the present invention showing sequential illustration of a thimble mechanism for retention of a shackle in a wire rope loop termination;
- FIGS. 6 through 9 illustrate a second, preferred embodiment of the thimble mechanism for retention of a shackle in a wire rope loop termination employing a thimble with a retainer cross pin;
- FIGS. 10 through 14 illustrate a third, preferred embodiment of the thimble mechanism for retention of a shackle in a wire loop termination.
- FIGS. 1 through 5 illustrate a first preferred embodiment 10 of the present invention showing the sequential installation of a thimble mechanism for retention of a shackle in a wire rope loop termination.
- the present invention may be used with a wide variety of standard shackles.
- the shackle 12 has a body or bow 14 and a pair of extending legs 16 and 18 .
- Each of the legs 16 and 18 terminates in an ear or end 20 and 22 , respectively.
- Each end 20 and 22 includes an opening to form a pair of opposed, aligned openings for receipt of a shackle bolt or screw pin.
- Each of the ends 20 and 22 has a width which is smaller than the depth.
- a thimble body 24 includes an external arcuate edge with a thimble rope groove 26 recessed therein.
- the thimble rope groove 26 forms the general contour of a loop for the wire rope.
- the thimble body 24 includes a central opening 28 .
- the central opening 28 is larger than the width but smaller than the depth of the shackle ends 20 and 22 .
- a slot or keyway 30 is provided in the thimble body 24 with the keyway 30 extending from the central opening 28 to the thimble rope groove 26 of the thimble body 24 .
- the bow 14 of the shackle 12 is inserted or reeved through the keyway 30 and into the central opening 28 so that the bow 14 resides in the central opening 28 of the thimble body 24 .
- the wire rope termination 10 is thereafter completed in a variety of ways.
- a cylindrical sleeve 32 is initially slipped or reeved onto a wire rope 34 .
- the wire rope 34 is reeved into place in and around the thimble rope groove 26 .
- the cylindrical sleeve 32 is swaged around the wire rope 34 to complete the loop termination.
- the wire rope 34 closes the keyway 30 or slot and prevents the shackle 14 from being removed.
- the angle and the width of the central opening 28 and keyway prevent the end of the shackle 12 from being removed from the thimble body 24 .
- FIGS. 6 through 9 illustrate a second preferred embodiment 40 of the thimble mechanism for retention of a shackle in a wire rope loop termination employing a thimble with a retainer cross pin.
- a shackle 12 has a body or bow 14 and a pair of extending legs 16 and 18 . Each of the legs 16 and 18 terminates in an ear or end 20 and 22 , respectively. Each end 20 and 22 includes an opening to form a pair of opposed, aligned openings for receipt of a shackle bolt (not shown). Each of the ends 20 and 22 has a width which is smaller than the depth.
- a thimble body 42 includes an external arcuate edge with a thimble rope groove 44 which circumnavigates the thimble body 42 .
- the thimble body 42 may be seen apart from the assembly 40 in FIG. 6 .
- the thimble rope groove 44 forms the general contour of a loop for the receipt of the wire rope.
- the thimble body 42 also includes a central opening 46 therethrough.
- the central opening is in the form of an oval which is larger than the width and the depth of the shackle ends 20 and 22 , which can be best seen in FIG. 6 .
- FIGS. 6 through 9 An installation sequence is illustrated in FIGS. 6 through 9 .
- one end of the shackle such as end 20
- the bow 14 of the shackle will reside in the central opening, as best seen in FIG. 7 .
- a retaining pin 48 is inserted through a first opening 50 in the thimble body 42 into and across the central opening 46 and into an opposed, second opening 52 in the thimble body 42 .
- the retaining pin 48 and the openings 50 and 52 may be designed so that the retaining pin 48 will friction fit within the openings.
- the location of the openings and the pin 48 are designed to retain the proper orientation of the shackle 12 .
- a cylindrical sleeve 32 will be slipped over or reeved onto an end of a wire rope 34 .
- the wire rope 34 will be reeved or threaded in the thimble rope groove 44 of the thimble body 42 to form a termination loop.
- the sleeve 32 will be swaged or otherwise connected to the wire rope 34 .
- the shackle ends 20 and 22 will be prevented from being removed from the central opening of the thimble body 42 because the pin 48 reduces the size of the central opening. Additionally, the wire rope 34 discourages any movement or removal of the retaining pin 48 in the thimble body.
- FIGS. 10 , 11 , 12 , 13 and 14 illustrate a third, preferred embodiment 60 of the present invention showing sequential installation of a thimble mechanism for retention of a shackle in wire rope loop termination.
- the shackle 12 has a body or bow 14 and a pair of extending legs 16 and 18 . Each of the legs 16 and 18 terminates in an ear or end 20 and 22 , respectively.
- Each end 20 and 22 includes an opening to form a pair of opposed, aligned openings for receipt of a shackle bolt (not shown). There is a defined space between the ends 20 and 22 as seen in FIG. 13 , and as shown by arrow 68 .
- a thimble body 62 includes an external arcuate edge with a thimble rope groove 64 recessed therein as best seen in FIGS. 10 and 11 .
- the thimble body 62 also includes a central opening 66 for receipt of the shackle 12 .
- one end of the shackle 12 is inserted or reeved through the central opening 66 of the thimble body 62 .
- the shackle 12 may be slipped or inserted into the thimble body 62 without the wire rope installed.
- the bow 14 of the shackle 12 will be suspended from the thimble body 62 .
- a cylindrical sleeve 32 will be slipped over or reeved onto an end of a wire rope 34 .
- the wire rope 34 will be reeved or threaded in the thimble rope groove 64 of the thimble body 62 in order to form a termination loop.
- the sleeve will be swedged or otherwise connected to the wire rope 34 .
- the thimble body 62 and wire rope 34 have a dimension which is larger than the defined space of the opening between the ends 20 and 22 of the legs 16 and 18 of the shackle. Accordingly, the shackle 12 cannot be removed.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
Abstract
Description
Claims (2)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/758,661 US9003632B2 (en) | 2012-03-06 | 2013-02-04 | Thimble mechanism for retention of a shackle in a wire loop termination |
EP14153676.3A EP2787245B1 (en) | 2013-02-04 | 2014-02-03 | Thimble mechanism for retention of a shackle in a wire loop termination |
NO14749707A NO3014036T3 (en) | 2012-03-06 | 2014-06-18 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201261607206P | 2012-03-06 | 2012-03-06 | |
US13/758,661 US9003632B2 (en) | 2012-03-06 | 2013-02-04 | Thimble mechanism for retention of a shackle in a wire loop termination |
Publications (2)
Publication Number | Publication Date |
---|---|
US20140150240A1 US20140150240A1 (en) | 2014-06-05 |
US9003632B2 true US9003632B2 (en) | 2015-04-14 |
Family
ID=50823993
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/758,661 Expired - Fee Related US9003632B2 (en) | 2012-03-06 | 2013-02-04 | Thimble mechanism for retention of a shackle in a wire loop termination |
Country Status (2)
Country | Link |
---|---|
US (1) | US9003632B2 (en) |
NO (1) | NO3014036T3 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10801582B2 (en) | 2017-01-06 | 2020-10-13 | Gator Rigging, Inspection, Testing and Supply, LLC | Method and apparatus for retaining shackles using thimble retaining element |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2709616A (en) | 1952-09-15 | 1955-05-31 | Larson Victor Sjunne | Thimble ring for shackles |
US4225172A (en) | 1977-10-13 | 1980-09-30 | Bruno Marquardt | Flexible connection for cable wire rope ends |
US5193480A (en) * | 1991-01-22 | 1993-03-16 | The Crosby Group, Inc. | Hoisting line fittings with working load limit indicia |
US5553360A (en) | 1995-05-19 | 1996-09-10 | The Crosby Group, Inc. | Extended wedge socket assembly |
US5802680A (en) | 1997-08-15 | 1998-09-08 | The Crosby Group, Inc. | Two-piece bolt and saddle for wire rope clips |
US6035692A (en) | 1999-01-19 | 2000-03-14 | The Crosby Group, Inc. | Two pass method and apparatus of forming a hexagonal swage for wire rope terminations |
US20100050590A1 (en) | 2008-08-26 | 2010-03-04 | Taila Shnayder | Marine safety device attachment with automatic release capability |
US20120003033A1 (en) | 2009-09-01 | 2012-01-05 | Delta Rigging & Tools, Inc. | Thimble with element retaining feature |
-
2013
- 2013-02-04 US US13/758,661 patent/US9003632B2/en not_active Expired - Fee Related
-
2014
- 2014-06-18 NO NO14749707A patent/NO3014036T3/no unknown
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2709616A (en) | 1952-09-15 | 1955-05-31 | Larson Victor Sjunne | Thimble ring for shackles |
US4225172A (en) | 1977-10-13 | 1980-09-30 | Bruno Marquardt | Flexible connection for cable wire rope ends |
US5193480A (en) * | 1991-01-22 | 1993-03-16 | The Crosby Group, Inc. | Hoisting line fittings with working load limit indicia |
US5553360A (en) | 1995-05-19 | 1996-09-10 | The Crosby Group, Inc. | Extended wedge socket assembly |
US5802680A (en) | 1997-08-15 | 1998-09-08 | The Crosby Group, Inc. | Two-piece bolt and saddle for wire rope clips |
US6035692A (en) | 1999-01-19 | 2000-03-14 | The Crosby Group, Inc. | Two pass method and apparatus of forming a hexagonal swage for wire rope terminations |
US20100050590A1 (en) | 2008-08-26 | 2010-03-04 | Taila Shnayder | Marine safety device attachment with automatic release capability |
US20120003033A1 (en) | 2009-09-01 | 2012-01-05 | Delta Rigging & Tools, Inc. | Thimble with element retaining feature |
US8256982B2 (en) | 2009-09-01 | 2012-09-04 | Delta Rigging & Tools, Inc. | Thimble with element retaining feature |
US8256981B2 (en) | 2009-09-01 | 2012-09-04 | Delta Rigging & Tools, Inc. | Thimble with element retaining feature |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10801582B2 (en) | 2017-01-06 | 2020-10-13 | Gator Rigging, Inspection, Testing and Supply, LLC | Method and apparatus for retaining shackles using thimble retaining element |
Also Published As
Publication number | Publication date |
---|---|
NO3014036T3 (en) | 2018-03-03 |
US20140150240A1 (en) | 2014-06-05 |
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Owner name: THE CROSBY GROUP LLC, OKLAHOMA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BEALL, ROGER;BOECKMAN, PAUL;GARRETT, CHARLES R.;AND OTHERS;REEL/FRAME:029750/0366 Effective date: 20130204 |
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